Preparation and photocatalytic properties of hexagonal-shaped ZnO:Sm3+ by microwave-assisted hydrothermal method

Novel 3D rods ZnO:Sm monophasic microcrystals have been synthesized by the microwave-assisted hydrothermal (MAH) method at 140 °C for 10 min. The experimental results revealed that concentration of samarium have a significant influence on the band gap and photocatalysis. On the other hand, the samar...

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Detalles Bibliográficos
Autores: Paskocimas, Carlos Alberto, Carvalho, Raquel Guilherme de, Tavares, Mara Tatiane de Souza, Oliveira, F. K. F., Nascimento, Rubens Maribondo do, Silva, Elson Longo da, Li, Maximo Siu, Delmonte, Maurício Roberto Bomio, Motta, Fabiana Villela da
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:Brasil
Institución:Universidade Federal do Rio Grande do Norte (UFRN)
Repositorio:Repositório Institucional da UFRN
Idioma:inglés
OAI Identifier:oai:repositorio.ufrn.br:123456789/32267
Acceso en línea:https://repositorio.ufrn.br/handle/123456789/32267
Access Level:acceso abierto
Palabra clave:Photocatalytic properties
Hexagonal-shaped
Sm3+
Microwave-assisted
Hydrothermal method
Descripción
Sumario:Novel 3D rods ZnO:Sm monophasic microcrystals have been synthesized by the microwave-assisted hydrothermal (MAH) method at 140 °C for 10 min. The experimental results revealed that concentration of samarium have a significant influence on the band gap and photocatalysis. On the other hand, the samarium in the ZnO semiconductor structure increases photodegradation activity. ZnO sample doped with 8% Sm3+ exhibited the best activity in the photodegradation of methylene blue dye when compared to that doped with 0–4 mol%. Enhanced photocatalytic activity was attributed to samarium, which inhibits the recombination of electron–hole pairs

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